Global patent index - EP 0885913 A4

EP 0885913 A4 2000-03-22 - COPOLYETHER AND SOLID POLYMER ELECTROLYTE

Title (en)

COPOLYETHER AND SOLID POLYMER ELECTROLYTE

Title (de)

FESTER POLYMERELEKTROLYT AUS COPOLYESTERN

Title (fr)

ELECTROLYTE POLYMERE SOLIDE COMPRENANT DU COPOLYETHER

Publication

EP 0885913 A4 (EN)

Application

EP 97946152 A

Priority

  • JP 9704499 W
  • JP 32842296 A
  • JP 34524496 A

Abstract (en)

[origin: EP0885913A1] A solid polymer electrolyte obtained by blending (1) a polyether copolymer having a main chain, which is derived form ethylene oxide, and a side chain having two oligooxyethylene groups, (2) an electrolyte salt compound, and, if necessary, (3) a plasticizer which is any one of an aprotic organic solvent or a derivative or metal salt of a polyalkylene glycol having a number-average molecular weight of 200 to 5,000 or a metal salt of the derivative, is superior in ionic conductivity and also superior in processability, moldability and mechanical strength to a conventional solid electrolyte. A secondary battery is constructed by using the solid polymer electrolyte in combination with a lithium metal negative electrode and a lithium cobaltate positive electrode.

IPC 1-7 (main, further and additional classification)

C08G 65/22; C08G 65/08; C08G 77/46; C08G 59/22; C08F 299/02; C08L 71/02; C08L 83/12; C08L 63/00; C08K 3/24; C08K 5/42; H01M 10/40; H01M 6/18

IPC 8 full level (invention and additional information)

C08G 59/14 (2006.01); C08G 59/22 (2006.01); C08G 65/14 (2006.01); C08G 65/22 (2006.01); C08G 65/24 (2006.01); C08K 5/00 (2006.01); C08L 71/02 (2006.01); H01G 9/02 (2006.01); H01G 9/025 (2006.01); H01M 6/18 (2006.01); H01M 10/05 (2010.01); H01M 10/0565 (2010.01)

CPC (invention and additional information)

H01G 9/025 (2013.01); C08G 59/145 (2013.01); C08G 59/22 (2013.01); C08G 65/14 (2013.01); C08G 65/22 (2013.01); C08G 65/223 (2013.01); C08G 65/24 (2013.01); C08K 5/0008 (2013.01); C08L 71/02 (2013.01); H01M 6/181 (2013.01); H01M 10/052 (2013.01); H01M 10/0565 (2013.01); Y02P 70/54 (2015.11)

Combination set (CPC)

  1. C08K 5/0008 + C08L 71/02
  2. C08L 71/02 + C08L 71/00

Citation (search report)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

EP 0885913 A1 19981223; EP 0885913 A4 20000322; EP 0885913 B1 20030416; CA 2244904 A1 19980618; CA 2244904 C 20061128; CN 1094494 C 20021120; CN 1210548 A 19990310; DE 69720980 D1 20030522; DE 69720980 T2 20040212; JP 3223978 B2 20011029; TW 444044 B 20010701; US 6180287 B1 20010130; WO 9825990 A1 19980618

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